osu/osu.Game.Rulesets.Osu/UI/OsuPlayfieldAdjustmentConta...

78 lines
2.8 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
#nullable disable
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Rulesets.UI;
using osuTK;
namespace osu.Game.Rulesets.Osu.UI
{
public class OsuPlayfieldAdjustmentContainer : PlayfieldAdjustmentContainer
{
protected override Container<Drawable> Content => content;
private readonly ScalingContainer content;
private const float playfield_size_adjust = 0.8f;
/// <summary>
/// When true, an offset is applied to allow alignment with historical storyboards displayed in the same parent space.
/// This will shift the playfield downwards slightly.
/// </summary>
public bool AlignWithStoryboard
{
set => content.PlayfieldShift = value;
}
public OsuPlayfieldAdjustmentContainer()
{
Anchor = Anchor.Centre;
Origin = Anchor.Centre;
// Calculated from osu!stable as 512 (default gamefield size) / 640 (default window size)
Size = new Vector2(playfield_size_adjust);
InternalChild = new Container
{
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
RelativeSizeAxes = Axes.Both,
FillMode = FillMode.Fit,
FillAspectRatio = 4f / 3,
Child = content = new ScalingContainer { RelativeSizeAxes = Axes.Both }
};
}
/// <summary>
/// A <see cref="Container"/> which scales its content relative to a target width.
/// </summary>
private class ScalingContainer : Container
{
internal bool PlayfieldShift { get; set; }
protected override void Update()
{
base.Update();
// The following calculation results in a constant of 1.6 when OsuPlayfieldAdjustmentContainer
// is consuming the full game_size. This matches the osu-stable "magic ratio".
//
// game_size = DrawSizePreservingFillContainer.TargetSize = new Vector2(1024, 768)
//
// Parent is a 4:3 aspect enforced, using height as the constricting dimension
// Parent.ChildSize.X = min(game_size.X, game_size.Y * (4 / 3)) * playfield_size_adjust
// Parent.ChildSize.X = 819.2
//
// Scale = 819.2 / 512
// Scale = 1.6
Scale = new Vector2(Parent.ChildSize.X / OsuPlayfield.BASE_SIZE.X);
Position = new Vector2(0, (PlayfieldShift ? 8f : 0f) * Scale.X);
// Size = 0.625
Size = Vector2.Divide(Vector2.One, Scale);
}
}
}
}